sbooder Posted July 6, 2010 Share Posted July 6, 2010 Hi All, I have a small budget for the purchase of one good filter for enhanced dso viewing. Could I get a consensus form you guys and girls, on which would be the best all-round filter for dso's (if there is a good all-rounder) Thanks. Link to comment Share on other sites More sharing options...
Moonshane Posted July 6, 2010 Share Posted July 6, 2010 Hi thereI have just bought a 2" Castell Oiii filter. This was £48 delivered from 365 Astronomy.This is the first 'proper' filter I have ever bought and although I'll do a mini review shortly my comments would be as follows:excellent value for moneyconstruction of cell very robustcoatings seem smooth and well appliedquite harsh and reduces light tremendously/turns stars greenhowever, looking at the light pass results on the site and confirmed by my single experience last night, you can still see enough stars to be guided a little so it's not as harsh a some.makes focusing a little tricky - focus on stars rather than the DSOin my light polluted skies - pretty much as poor as it gets (I live between Manchester and Stockport) - I could not see even a hint of the Veil nebula with my 12" dob. Putting the filter in (even with the current light skies - although I waited until Cygnus was at Zenith) made it possible to easily see the Bridal Veil and the Witches Broom with no problem.On the basis of this one, I'd recommend you consider Castell products as a cost effective way to buy DSO filters. I think the UHC filter would be a better all round one as it's less harsh. At this price though, buying both is not too out of reach for many people.good luck. Link to comment Share on other sites More sharing options...
sbooder Posted July 6, 2010 Author Share Posted July 6, 2010 Thanks Moonshane, I will put it on my short list. Link to comment Share on other sites More sharing options...
catburglar Posted July 6, 2010 Share Posted July 6, 2010 sbooder- sorry for hijacking the thread butmoonshane- have you used the filter in the XLT120- or is the filter a bit too fierce for the smaller scope?Thanksjohn Link to comment Share on other sites More sharing options...
Moonshane Posted July 6, 2010 Share Posted July 6, 2010 No worries John - I haven't yet but follow the thread on my review http://stargazerslounge.com/equipment-reviews/108143-review-castell-2-oiii-filter.htmlI have just made a promise on that thread to try it soon. I'll report back view the other thread then.I actually suspect from comments that the filter is not as fierce as others and this may help the refractor (I hope!). Link to comment Share on other sites More sharing options...
sbooder Posted July 6, 2010 Author Share Posted July 6, 2010 Hijack away, I am interested too. Link to comment Share on other sites More sharing options...
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